Filament welder

(Other parts needed)-Cut a 40mm piece of PTFE tubing (I used Capricorn)-For the spring that goes over the PTFE tube, anything that fits snug will work. (I used a 0.5x5x30mm spring) (Directions)-Insert both pieces of filament you want to splice together into the PTFE tube.-Heat both sides for about 3-5 seconds on each side of the spring.-Put on both the heat guards to prevent burning fingers.-(PUSH) do not pull from both sides of the filament to event it out the the right diameter. (THERE ARE LOTS OF TUTORIAL VIDEOS ON YOUTUBE ON HOW TO USE)